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OEM (Genuine) 2009 Buick LaCrosse Front Oxygen Sensor
PartNumber: 19209814
Product Specifications- Notes: 3.8 Liter, Federal; Lacrosse; Front; 3.8l; Federal
- Other Names: Front Oxygen Sensor, Oxygen Sensor
- Item Dimensions: 8.5 x 3.2 x 3.1 inches
- Item Weight: 0.70 Pounds
- Fitment Type: Direct Replacement
- Replaces: 12574218
- Part Description: 2009 Buick LaCrosse Front Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
$62.06 MSRP:$117.12You Save: $55.06 (48%)
Denso® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4236Product Specifications- Notes: DENSO is the OE Manufacturer / Oxygen Sensor
- Connector Gender: Female
- Installation Type: Screw
- O2 Sensor Configuration: Direct Fit
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511113015
- Wire Harness Length: 12.2" (309.9 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
$51.99
OEM (Genuine) 2009 Buick LaCrosse Front Oxygen Sensor
PartNumber: 12597878
Product Specifications- Notes: 3.8 Liter, California; Lacrosse; Front; 3.8l; California
- Other Names: Front Oxygen Sensor, Oxygen Sensor
- Item Dimensions: 8.2 x 3.0 x 3.1 inches
- Item Weight: 0.70 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 Buick LaCrosse Front Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
$54.42 MSRP:$102.72You Save: $48.30 (48%)
Delphi® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: ES20383Product Specifications- Notes: 16in Length
- Connector Shape: Triangular
- Overall Length: 13.6" (340 mm)
- Position: Upstream
- Terminal Quantity: 4
- Terminal Type: Blade
- UPC: 689604207321
- Wire Harness Length: 12.4" (310 mm)
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX | 6 Cyl 3.8L
- 2009 Buick LaCrosse | CXL | 6 Cyl 3.8L
$85.20
Denso® Universal Fit Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4209Product Specifications- Notes: OE Quality Universal Replacement Sensor;Exc Calif; OE Quality Universal Replacement Sensor
- Installation Type: Threaded
- O2 Sensor Configuration: Universal
- OE Part Number: 56028232AA, 56028233AA, 56028235AA, 56041345AD, 89465-52200
- Position: Downstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511142091
- Wire Harness Length: 11.77" (299 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Universal Fit Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$41.03
NTK® OE Type Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 21546Product Specifications- Notes: B1S1; Calif Emissions; OE Equivalent Design
- Mounting Type: Threaded
- Sensor Type: Heated
- Thread Diameter: 18.000
- Universal Or Specific Fit: Specific
- UPC: 087295215463
- Wire Quantity: 4
- Wiring Harness Length: 16.5000
- Part Description: 2009 Buick LaCrosse OE Type Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$45.42
Walker Products® Premium Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 250-24248Product Specifications- Notes: Non Calif-ESV; B1S2;Calif-ESV; B1S2
- Connector Gender: Male
- Overall Length: 16.85"(427.99 mm)
- Position: Upstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 0.71"(18.0 mm)
- UPC: 724620040900
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 13.31"(338.074 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Premium Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$45.53
OEM (Genuine) 2009 Buick LaCrosse Front Oxygen Sensor
PartNumber: 12580466
Product Specifications- Notes: 5.3 Liter; Lacrosse; Front; 5.3l
- Other Names: Front Oxygen Sensor, Oxygen Sensor
- Item Dimensions: 8.2 x 3.0 x 3.2 inches
- Item Weight: 0.60 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 Buick LaCrosse Front Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
$70.85 MSRP:$133.71You Save: $62.86 (48%)
Delphi® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: ES20352Product Specifications- Connector Shape: Square
- Position: Front
- Terminal Quantity: 4
- Terminal Type: Blade
- UPC: 689604201510
- Wire Harness Length: 17.2" (430 mm)
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | Super | 8 Cyl 5.3L
$68.10
Spectra Premium® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: OS5051Product Specifications- Notes: w/Fed Emissions; Bank 1 Sensor 1
- Connector Gender: Male
- Connector Shape: Square
- Installation Type: Screw
- Overall Length: 13 3/4"
- Position: Upstream
- Sensor Type: Heated - Zirconia
- Terminal Quantity: 4
- Thread: M18 X 1.5 mm
- UPC: 671607155334
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$12.84
Denso® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4249Product Specifications- Notes: OE Quality Replacement Sensor
- Connector Gender: Female
- Installation Type: Screw
- O2 Sensor Configuration: Direct Fit
- Position: Downstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511117037
- Wire Harness Length: 11.02" (279.9 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
$40.85
NTK® OE Type Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 21023Product Specifications- Notes: B1S2; OE MFR: NTK
- Installation Type: Screw
- Location: B1S2
- O2 Sensor Configuration: Direct Fit
- Position: Downstream
- Thread Diameter: 0.71" (18 mm)
- Wire Harness Length: 12.25" (311.2 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse OE Type Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
$43.74Walker Products® Premium Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 250-24273Product Specifications- Notes: Non Calif-ESV; B1S1
- Connector Gender: Female
- Location: B1S1 Sensor
- Overall Length: 13.31"(338.074 mm)
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 0.71"(18.0 mm)
- UPC: 724620041082
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 9.76"(247.904 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Premium Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$39.41OEM (Genuine) 2009 Buick LaCrosse Rear Oxygen Sensor
PartNumber: 19209817
Product Specifications- Notes: 3.8 Liter; Lacrosse; Rear; 3.8l
- Other Names: Oxygen Sensor, Rear Oxygen Sensor
- Item Dimensions: 8.2 x 3.2 x 3.0 inches
- Item Weight: 0.70 Pounds
- Fitment Type: Direct Replacement
- Replaces: 12616672
- Part Description: 2009 Buick LaCrosse Rear Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
$85.31 MSRP:$160.98You Save: $75.67 (48%)
Delphi® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: ES20007Product Specifications- Notes: 12in Length;with California Emission System
- Connector Shape: Square
- Position: Rear
- Terminal Quantity: 4
- Terminal Type: Blade
- UPC: 689604145524
- Wire Harness Length: 12.4" (310 mm)
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX | 6 Cyl 3.8L
- 2009 Buick LaCrosse | CXL | 6 Cyl 3.8L
$55.70
Denso® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4103Product Specifications- Notes: DENSO is the OE Manufacturer / Oxygen Sensor
- Connector Gender: Female
- Installation Type: Screw
- O2 Sensor Configuration: Direct Fit
- Position: Downstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511141032
- Wire Harness Length: 14.76" (374.9 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$39.64Walker Products® Premium Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 250-24703Product Specifications- Connector Gender: Male
- Overall Length: 18.03"(457.962 mm)
- Position: Upstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 0.71"(18.0 mm)
- UPC: 724620014239
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 14.49"(368.046 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Premium Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
$41.82OEM (Genuine) 2009 Buick LaCrosse Rear Oxygen Sensor
PartNumber: 12615124
Product Specifications- Notes: 5.3 Liter; Lacrosse; Rear; 5.3l
- Other Names: Oxygen Sensor, Rear Oxygen Sensor
- Item Dimensions: 8.1 x 3.2 x 3.1 inches
- Item Weight: 0.60 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 Buick LaCrosse Rear Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
$99.07 MSRP:$186.94You Save: $87.87 (48%)
Delphi® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: ES20096Product Specifications- Notes: without California Emission System;17in Cone Length
- Connector Shape: Square
- Position: Front
- Terminal Quantity: 4
- Terminal Type: Blade
- UPC: 689604145173
- Wire Harness Length: 12.4" (310 mm)
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | CX | 6 Cyl 3.8L
- 2009 Buick LaCrosse | CXL | 6 Cyl 3.8L
$47.41
Denso® Universal Fit Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4212Product Specifications- Notes: Calif; OE Quality Universal Replacement Sensor
- Installation Type: Screw
- O2 Sensor Configuration: Universal
- OE Part Number: 5C5Z9F472AA, 88Z9F472AB
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511142121
- Wire Harness Length: 11.77" (299 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Universal Fit Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$31.25Walker Products® Premium Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 250-24470Product Specifications- Notes: Calif-ESV; B1S1
- Connector Gender: Female
- Location: B2S1 Sensor
- Overall Length: 17.64"(448.056 mm)
- Position: Upstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 0.71"(18.0 mm)
- UPC: 724620043529
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 14.09"(357.886 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Premium Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$35.97
Denso® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4646Product Specifications- Notes: Exc Calif; OE Quality Replacement Sensor
- Connector Gender: Female
- Installation Type: Screw
- O2 Sensor Configuration: Direct Fit
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511146464
- Wire Harness Length: 12.99" (329.9 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$35.87
Walker Products® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 350-34483Product Specifications- Notes: Upstream;Downstream
- Connector Gender: Male
- Connector Shape: Radiused Polygon
- Installation Type: Threaded
- Overall Length: 18.03"
- Position: Upstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 18.0 mm
- UPC: 724620092978
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 14.49"
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
$36.16
Denso® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 234-4668Product Specifications- Notes: Calif; DENSO is the OE Manufacturer / Oxygen Sensor
- Connector Gender: Male
- Installation Type: Screw
- O2 Sensor Configuration: Direct Fit
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 0.71" (18 mm)
- UPC: 042511112568
- Wire Harness Length: 15.75" (400.1 mm)
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$31.30
Walker Products® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 350-34596Product Specifications- Notes: Non Calif-ESV; Downstream; B1S2;Calif-ESV; Downstream; B1S2
- Connector Gender: Male
- Connector Shape: Radiused Polygon
- Installation Type: Threaded
- Overall Length: 16.85"
- Position: Downstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 18.0 mm
- UPC: 724620094071
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 13.31"
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$36.15
Walker Products® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 350-34094Product Specifications- Notes: Non Calif-ESV; Upstream; B1S1
- Connector Gender: Female
- Connector Shape: Radiused Polygon
- Installation Type: Threaded
- Location: B1S2
- Overall Length: 13.31"
- Position: Upstream
- Sensor Type: Heated
- Thread Diameter: 18.0 mm
- UPC: 724620089183
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 9.76"
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$32.23
Walker Products® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 350-34581Product Specifications- Notes: Calif-ESV; Upstream; B1S1
- Connector Gender: Female
- Connector Shape: Radiused Polygon
- Installation Type: Threaded
- Location: B1S1
- Overall Length: 17.64"
- Position: Upstream Passenger Side
- Sensor Type: Heated
- Thread Diameter: 18.0 mm
- UPC: 724620093937
- Wire Gauge Measurement: 20 Gauge
- Wire Harness Length: 14.09"
- Wires Quantity: 4 Wire Leads
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$28.68
NTK® OE Type Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: 21513Product Specifications- Notes: B1S2; OE Equivalent Design
- Mounting Type: Threaded
- Sensor Type: Heated
- Thread Diameter: 18.000
- Universal Or Specific Fit: Specific
- UPC: 087295215135
- Wire Quantity: 4
- Wiring Harness Length: 15.7500
- Part Description: 2009 Buick LaCrosse OE Type Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 6 Cyl 3.8L
$51.79
Spectra Premium® Oxygen Sensor for 2009 Buick LaCrosse
PartNumber: OS5520Product Specifications- Notes: Bank 1 Sensor 2
- Connector Gender: Female
- Connector Shape: Square
- Installation Type: Screw
- Overall Length: 13 3/4"
- Position: Downstream
- Sensor Type: Heated - Zirconia
- Terminal Quantity: 4
- Thread: M18 X 1.5 mm
- UPC: 671607539059
- Wrench Size: 0.88" (22 mm)
- Part Description: 2009 Buick LaCrosse Oxygen Sensor
Vehicle Fitment- 2009 Buick LaCrosse | All Trims | 8 Cyl 5.3L
FAQ for Oxygen Sensor Repair
Q: How do you install the heated oxygen sensor?
A:
You can install the sensor by installing the HO2S electrical connector, using retaining clips, and install the retaining clips.
By Omar
GM Specialist
30/12/2021Q: What are some service precautions for the heated oxygen and oxygen sensor?
A:
Some precautions are to handle the sensor carefully, do not repair the wiring and terminals.
By Bob
GM Specialist
23/12/2021Q: How do you remove the heated oxygen sensor 2?
A:
You can remove the sensor by removing and disconnecting the HO2S from the harness connector.
By Bob
GM Specialist
21/12/2021Q: How does contamination occur in the sensor?
A:
Contamination may occur due to inappropriate RTV sealant or excessive engine coolant.
By Omar
GM Specialist
17/12/2021Q: What if the sensor is contaminated?
A:
If the sensor is exposed then a part of the sensor will be covered in a white coating.
By Bob
GM Specialist
17/12/2021Q: What is the installation procedure for the heated oxygen sensor 2?
A:
The procedure is to install the O2S to the exhaust and connect the electrical connector the harness connector, and the retaining clips.
By Bob
GM Specialist
16/12/2021Q: What is the proper way to remove the heated oxygen sensor?
A:
You can remove the heated oxygen sensor and the HO2S electrical connector.
By Bob
GM Specialist
15/12/2021See more FAQs (2)